Syeda is a combination hormone drug that prevents pregnancy. It has a progestin, drospirenone and an estrogen, Ethinyl estradiol. Syeda belongs to a drug class known as estrogen/progestin combinations. Syeda is available in several brand names some of which are: Gianvi, Loryna, Syeda, Vestura, Ocella, Yaz, Yasmin, Zarah. Syeda inhibits ovulation by providing a non-conducive fertilization environment.